3234533

Information

• Patent Grant
• 3234533

• References
• Source

• Patent Number

  3,234,533

• Date Filed

  Not available

• Date Issued

  Tuesday, February 8, 1966
  58 years ago

• CPC

  • H04Q9/14 - Calling by using pulses
  • G08B5/22 - using electric transmission using electro-magnetic transmission
  • G08B26/00 - Alarm systems in which substations are interrogated in succession by a central station
  • G08B26/008 - central annunciator means of the sensed conditions
  • H04Q9/00 - Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
  • H04Q2209/756 - where the polling of the sub-stations is cyclic

• US Classifications

  • 340 - Communications: electrical